I can visualise the rock garden quilt block in all sorts of lovely colour combinations. In fact you could make a quilt with the central square different in each block and use up some scrap fabric. We have such a lovely sunny day here in Ludlow today that a garden quilt block seems particularly appropriate. It’s classified as a four patch block and I have made it here as a 12″ square.
3.7/8″ squares: one each in yellow and white, one each in yellow and green, one each in green and white
3.1/2″ squares: six white and four green
Making the rock garden quilt block
Make half square triangle units with all the 3.7/8″ squares in the colour combinations listed above. Place two squares with right sides together and mark a line along the diagonal. Sew a 1/4″ seam either side of the marked line and cut along the line to produce two half square triangle units. Normally I would say press the seam allowance towards the dark fabric but in this case the yellow fabric is a much thicker fabric than the white so the seam will lay more flat if I press the seam allowance towards the white. No rule should be inflexible!
Lay the patchwork squares out in four rows of four. There are white squares in two of the corners and green/white half square triangles in the other two corners. Along each edge there is a white square and a green square. The central yellow diamond is made using two white/yellow half square triangles and two yellow/green half square triangles.
Sew the squares together across each row and then sew the rows to each other to complete the rock garden quilt block.